Which of the following methods of preparation of amines will not give the same number of carbon atoms in the chain of amines as in the reactant?

(A) Reaction of nitrile with LiAlH4

(B) Reaction of amide with LiAlH4 followed by treatment with water.

(C) Heating alkyl halide with potassium salt of phthalimide followed by hydrolysis

(D) Treatment of amide with bromine in aqueous solution of sodium hydroxide.

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    Vishal Baghel | Contributor-Level 10

    3 months ago

    This is a Multiple Choice Questions as classified in NCERT Exemplar

    Ans: (D)

    Aliphatic and arylalkyl primary amines can be prepared by the reduction of the corresponding nitriles with LiAlH4

    Heating alkyl halide with primary, secondary and tertiary amine can be prepared by reduction of LiAlH4 followed by treatment with water.

    Heating alkyl halide with potassium salt of phthalimide followed by hydrolysis produces primary amine. This process is known as Gabriel phthalimide reaction. The number of carbon atoms in the chain of amines of product is same as reactant.

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